Q: What quantization of Qwen3 Coder Next 80B A3B should I use on a AMD Radeon RX 6750 XT?

For 12 GB VRAM on the AMD Radeon RX 6750 XT, the Q4_K_M variant is the best fit. Estimated ~3 tokens/sec on the Q4_K_M quantization.

Q: How fast does Qwen3 Coder Next 80B A3B run on AMD Radeon RX 6750 XT?

Roughly 3 tokens/sec for Q4_K_M. Real speed depends on context length, backend (Ollama, llama.cpp, LM Studio), and KV cache size.

Q: What if AMD Radeon RX 6750 XT is not enough for Qwen3 Coder Next 80B A3B?

Consider upgrading to Apple M1 Max (64 GB VRAM) which fits the recommended 52 GB target. Or pick a smaller quantization to stay on your current card.

Question 1

Can I run Qwen3 Coder Next 80B A3B on a AMD Radeon RX 6750 XT?

Accepted Answer

Sort of — AMD Radeon RX 6750 XT can run Qwen3 Coder Next 80B A3B (Q4_K_M) only by spilling layers to RAM. Generation will be slow. CPU + GPU hybrid — not enough VRAM (12 GB < 46 GB min), but 64 GB RAM is sufficient. Expect significantly slower inference.

Question 2

What quantization of Qwen3 Coder Next 80B A3B should I use on a AMD Radeon RX 6750 XT?

Accepted Answer

For 12 GB VRAM on the AMD Radeon RX 6750 XT, the Q4_K_M variant is the best fit. Estimated ~3 tokens/sec on the Q4_K_M quantization.

Question 3

How fast does Qwen3 Coder Next 80B A3B run on AMD Radeon RX 6750 XT?

Accepted Answer

Roughly 3 tokens/sec for Q4_K_M. Real speed depends on context length, backend (Ollama, llama.cpp, LM Studio), and KV cache size.

Question 4

What if AMD Radeon RX 6750 XT is not enough for Qwen3 Coder Next 80B A3B?

Accepted Answer

Consider upgrading to Apple M1 Max (64 GB VRAM) which fits the recommended 52 GB target. Or pick a smaller quantization to stay on your current card.

Quantization	File Size	Min VRAM	Rec VRAM	Context	Verdict	Estimated tok/s
Q4_K_MBest fit	40 GB	46 GB	52 GB	8K / 8K	Hybrid CPU+GPU	~3
Q5_K_M	50 GB	57.5 GB	65 GB	8K / 8K	Can't Run	—
Q8_0	80 GB	92 GB	104 GB	8K / 8K	Can't Run	—
FP16	160 GB	184 GB	208 GB	8K / 8K	Can't Run	—

Can I Run Qwen3 Coder Next 80B A3B on AMD Radeon RX 6750 XT?

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